Which of the Following Would Not Be a "Control" in an Experimental

Question

Which of the following would not be a "control" in an experimental procedure?
A) a "zero-value" group
B) an experimental group
C) a placebo group
D) a known standard of comparison
E) a normal group

Accepted Answer

An experimental group is not a control; it is the group in which the experimental procedure is performed and is compared against the control group(s) to measure the effect of the variable being tested.